Features & Benefits
- High accuracy
- Built-in temperature/relative humidity sensors
- Weatherproof design
- Optic USB interface
- Ideal for outdoor or condensing environments
- Easy to use and reliable
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HOBO by Onset U23-001A - Temperature/Relative Humidity Data Logger
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HOBO Pro v2 Data Logger offers high accuracy and built-in temperature/relative humidity sensors
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What Stands Out
Accurate Monitoring
The HOBO U23-001A provides precise temperature and relative humidity measurements, ensuring reliable data collection for environmental monitoring in various applications.
User-Friendly Design
With its straightforward interface and easy-to-use data logger, the HOBO is perfect for both beginners and experienced users, streamlining the data collection process.
Versatile Applications
Ideal for climate research, HVAC testing, and building management, the HOBO U23-001A caters to numerous industries, proving its value in diverse environmental monitoring scenarios.
Product Details
- Weatherproof housing for outdoor or condensing environments
- High accuracy and fast response
- Replaceable Relative Humidity sensor for superior recovery from condensing conditions
- Small-diameter external sensor versions for tight spaces
- Optic USB interface for fast and reliable data download
- Built-in temperature and relative humidity sensors with durable design for outdoor applications
| Mounting Type | Tabletop |
| Brand Name | Onset |
| Manufacturer | ONSET COMPUTER CORP |
| Part Number | U23-001 |
| Brand | Onset |
| Item Weight | 0.4 lbs (180 grams) |
Who Should Buy?
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Environmental Monitoring
Ideal for monitoring temperature and humidity in research, agriculture, and building management to prevent adverse conditions.
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Storage Facilities
Perfect for ensuring optimal environmental conditions in warehouses, museums, and archives to protect sensitive items.
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Laboratory Use
Useful for labs needing precise environmental control for experiments, ensuring reliable and reproducible results.
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Casual Users
Not suitable for casual users who need simplified solutions rather than detailed data logging features.
Product Description
HOBO by Onset U23-001A - Temperature/Relative Humidity Data Logger
Have any Query? Chat with us
Customer Questions & Answers
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Question:
What is the main function of the HOBO U23-001A data logger?
Answer: The HOBO U23-001A data logger is designed to monitor and record temperature and relative humidity levels over time. This allows users to assess environmental conditions accurately. It features high accuracy and a robust design, making it an ideal choice for applications such as indoor air quality monitoring, HVAC system performance evaluation, and environmental research. -
Question:
How does the HOBO U23-001A data logger record data?
Answer: The HOBO U23-001A records data using built-in sensors for temperature and humidity. It captures readings at user-defined intervals, which can range from seconds to hours. After the data logging session, you can download the data via a USB connection to analyze trends or events, facilitating better decision-making based on the collected data. -
Question:
What are the key features of the HOBO U23-001A?
Answer: Key features of the HOBO U23-001A include a compact design, diverse measurement capabilities, and high accuracy. It has a large memory capacity and supports multiple logging intervals. Additionally, it provides an easy-to-read LED status indicator and is compatible with HOBOware software for data analysis, making it a versatile tool for various applications. -
Question:
Is the HOBO U23-001A suitable for outdoor use?
Answer: While the HOBO U23-001A is primarily designed for indoor environments, it can be used outdoors if placed in a protective housing that shields it from moisture and direct sunlight. To effectively monitor outdoor conditions such as weather stations or agricultural settings, ensure it is adequately housed to prolong its lifespan and maintain accuracy. -
Question:
What type of battery does the HOBO U23-001A use?
Answer: The HOBO U23-001A is powered by a lithium battery, which can typically last several months depending on the frequency of data logging. This energy-efficient design allows for reliable operation without frequent battery changes. Users should monitor the battery status through the HOBOware software to ensure continuous functionality. -
Question:
How do I download data from the HOBO U23-001A?
Answer: To download data from the HOBO U23-001A, simply connect the data logger to your computer using a USB cable. The device will automatically appear in HOBOware software, enabling you to transfer and analyze your logged data with ease. This straightforward process allows users to gain insights into environmental conditions without technical difficulties. -
Question:
Can multiple HOBO U23-001A loggers be used together?
Answer: Yes, multiple HOBO U23-001A loggers can be deployed simultaneously in different locations to monitor various environments. This feature allows for comprehensive data collection across multiple sites, such as offices, storage facilities, or greenhouses, providing comparative analysis of environmental factors for better management decisions. -
Question:
What is the measurement range of the HOBO U23-001A?
Answer: The HOBO U23-001A has a measurement range of -20 to 70 degrees Celsius for temperature and 0 to 100% RH for relative humidity. This broad range makes it applicable for various environments, from climate-controlled storage to outdoor settings, ensuring that users can capture relevant data for their specific needs. -
Question:
Where can I buy HOBO by Onset U23-001A - TemperatureRelative Humidity Data Logger in Qatar?
Answer: You can purchase the HOBO by Onset U23-001A - TemperatureRelative Humidity Data Logger from Ubuy. Ubuy offers a seamless shopping experience for this high-quality data logger, providing access to product specifications and user reviews that assist in making an informed purchase decision. -
Question:
What industries commonly use the HOBO U23-001A data logger?
Answer: The HOBO U23-001A data logger is utilized across various industries such as agriculture, pharmaceuticals, food storage, and environmental research. Its reliable monitoring of temperature and humidity is crucial for maintaining optimal conditions in warehouses, laboratories, and greenhouses, ensuring product integrity and compliance with health regulations.
Onset Data Loggers Editorial Review
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Pros
- High accuracy
- Long battery life
- User-friendly interface
- Compact design
- Real-time data logging
Cons
- Limited storage capacity
Platform Trust & Buyer Confidence
DA
Dhoha
Verified buyer
“Was looking for chromatography filters and managed to find them and receive them in a short period of time. Great experience”
22 January 2026 · via Trustpilot
PP
Pretty
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“It was timely”
4 July 2026 · via Trustpilot
HA
hamza
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“Timely delivery and transparency”
19 February 2026 · via Trustpilot
MF
Mayerlyn
Verified buyer
“Excelente servicio y hasta la puerta de casa ??”
14 February 2026 · via Trustpilot
LR
Leon
Verified buyer
“The delivery time exceeded my expectations. The product was securely packaged.”
20-Jul-26 · via Trustpilot
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